NSN 4820-00-438-4990 · NIIN 004384990 · Part number 2518828
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 30003
Government record, cited
NSN 4820-00-438-4990 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-438-4990. Manufacturer of record part number: 2518828.
Manufacturer of record: Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
Identification
NSN: 4820-00-438-4990
NIIN: 004384990
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 2518828
Manufacturer: Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
General Description
The Valve,trigger Shut-, cataloged under National Stock Number 4820-00-438-4990, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Valve,trigger Shut-
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (CAGE 30003)
Technical Specifications
Parameter
Value
NSN
4820-00-438-4990
Primary Part Number
2518828
Item Name
Valve,trigger Shut-
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
⇄Related Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
2805-00-448-1050AE74DPOSSIBLE MATCH
VALVE,POPPET,ENGINE
Possible match (shared part number)Wisconsin Motors, Llc
6515-00-839-50104688POSSIBLE MATCH
IRRIGATION SET,UROLOGICAL,TUR
Possible match (shared part number)Abbott Laboratories Inc. Div Hospital Products Division
5960-01-009-22163239548POSSIBLE MATCH
ELECTRON TUBE
Possible match (shared part number)Raytheon Company Dba Raytheon
5905-01-115-4030D4688-4POSSIBLE MATCH
RESISTOR,VARIABLE,WIRE WOUND,NON
Possible match (shared part number)Crown Audio, Inc. Dba Crown International
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
Reference documents
Reference
Meaning
4688
3/2Design control — primary reference
U.S. Government activity
Related Parts
2805-00-448-1050POSSIBLE MATCH
VALVE,POPPET,ENGINE
AE74D
6515-00-839-5010POSSIBLE MATCH
IRRIGATION SET,UROLOGICAL,TUR
4688
5960-01-009-2216POSSIBLE MATCH
ELECTRON TUBE
3239548
5905-01-115-4030POSSIBLE MATCH
RESISTOR,VARIABLE,WIRE WOUND,NON
D4688-4
9150-01-208-0800POSSIBLE MATCH
LUBRICATING WAX
Frequently Asked Questions
What is NSN 4820-00-438-4990?
NSN 4820-00-438-4990 is a Valve,trigger Shut-, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-00-438-4990?
NSN 4820-00-438-4990 has 1 manufacturer part number on file: 2518828 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
What NSN replaces 4820-00-438-4990?
5 possible matches (shared part number, not a government interchangeability claim): 2805-00-448-1050, 6515-00-839-5010, 5960-01-009-2216. Verify interchangeability with system specifications before substitution.
Is NSN 4820-00-438-4990 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.